490000007

素因数分解:

$7^1\times {\mathrm{43}}^1\times {\mathrm{61}}^1\times {\mathrm{26687}}^1$

素因数の和:26798

約数の個数: 16

約数和(自身を含む): 582438912

約数和(自身を除く): 92438905

約数列:

[1, 7, 43, 61, 301, 427, 2623, 18361, 26687, 186809, 1147541, 1627907, 8032787, 11395349, 70000001, 490000007]

約数ペア:

[(1, 490000007), (7, 70000001), (43, 11395349), (61, 8032787), (301, 1627907), (427, 1147541), (2623, 186809), (18361, 26687)]